Yarn tensioning device



Oct. 28, 1952' A. T. GUILD 2,615,655

YARN TENSIONING DEVICE Filed April 6, 1948 2 SHEETS-SHEET 1 INVENTOR I Arch/ba/d 7.' Gui/d ATTO RNEYS Oct. 28, 1952 A. 'r. GUILD YARN TENSIONING DEVICE 2 SHEETS-SHEET 2 Filed April 6, 1948 f'fgp. 6.

ATTORNEYS Patented Oct. 28, 1952 YARN TEN-SIGNING DEVICE Archibald T. .Guild,.-Sarato ga 'Spa, N Y essignor toYanLRadli-e Go.,Inc., New .Yoik,'lN.Y.

AppliclitionApril 6, 19

1 claim. 1

This invention relates to textile 181115 and particularly to .a stop :motion and rmeans :for

controlling the tension :of yarn 01 :similar. Lillaments.

The present invention will be :rli-scussedsherein in conjunction with warping machinery, that :is, the winding of warp beams preparatory :to knitting or other textile fabrication. However, it is to be understood that such :use of thecinven'tion is by way of-example only :and the principlesdis- :closed :herein may be employed wherever idesirable without departing fromithe spirit or .scope of the invention.

In warping it is .of the utmost importance that each thread be evenly tensioned, otherwise poor warps and subsequently fabrics .of inferior :quality result. This is -.especia1ly-true in the warping of fine denier nylon where very light but uniform tensions are essential.

It is also of extreme importance that the warping machine stop automatically whenever a break in a thread or yarn occurs. Stop motions now being used are subject to'frequentfalse stops due to fluctuating tensions. "This is a source of considerable lost time for both operator and machine. Present stop .motions are also :ObjBC- tionable in not stopping .unless stop motion is cleaned very frequently, requiring considerable time.

According to the present invention, means are provided for subjecting yarn passing ;from one point to another to tension by suspending a weight therefrom, .the efiect of [the weight 'on the yarn-being-controlled within .close limits by controlling the angular direction .of the yarn to and from the weight, despite'variation's in the amount of slack produced in the yarn by the weight.

In the form of the present invention 'set iforth herein to illustrate the underlying principles one of the weights utilized to tension the yarn serves further as a stop motion element, being adapted to close an electrical machine-stopping circuit by downward movement thereof. Such downward movement of the weight may be occasioned by failure of the strand or by reason of too much slack developing therein to be further taken up by downward movement of the weight.

While it is preferred to run the two devices in conjunction with each other, each device may be used independently of the other. Both tension and stop motion are designed to provide a compensating tension effect on the thread, thereby overcoming the variance in draw from large and small size cones of yarn.

Various mechanical modifications may be made without -.departing lfrom the-present invention, which is not .limited to the form shown .herein ,by way \of example, or otherwisethan as defined in the appended claim.

In the drawings:

.1 is .a :top plan view of .a creel .provided with the :forms .of :tensioning .and stop motion means disclosed. herein by way .of example;

Fig. 2 .is across-sectional view of the creel .of Fig. 1, taken on .the line.IIII of Fig.1;

3 Ba side elevational view of .oneform of .tensioning device mounted on the eyelet bar of ,the :creel, the eyelet bar lbeingls'hown in crosssection;

Fig. -4.is a front elevational view of the tension device of Fig. .3;

.F-ig. 5.is-.asideelevational view or another form of tension .device .mounted on the eyeletbar, the latter .again being shown in .crossesection';

.Fig. 6 is .a front elevational view of the tensioning device ofFig. l5;

Fig. 27 is a fragmentary cross-sectional view showing a combined tension device andstop motion associated with a guide #bar projecting =forwardlyf-rom the creel, the cross-section being on the line VII-V.II of Fig. 1,; and

-8 is anelevational view ,of the tension device and stop .motion of Fig. !7 taken at right angles thereto. 5

In theseveral Jfigures of the drawing, like characters .of reference .denote like parts, and the .creel proper is designated generally [0' .in Figs. 1 and 2. Creel It) includes a vertical-seriesof longitudinally extending angle irons 1 2, each of which supports .a .horizontal row of rotatable spindles it which receive cones or cops of thread 'or,yarn J4. I y

.At the front'of .th'e creel there is a longitudinal eyelet bar l5 for each horizontal :row of cones l4, and the thread from each cone l4 passes through a porcelain eyelet l6 in the eyelet bar l5 and thence through one of the tensioning devices of the present invention which, in this instance, is supported by the lower flange of the angle iron which comprises the eyelet bar proper.

Referring to Figs. 3 and 4, each tension device of the form there shown comprises a base I! which maybe of fibre or the likeand is fixed to eyelet bar I5 by means of a screw "which passes upwardly through the eyelet bar and threads into base [1. A pair of guide elements, designated generally [9 and 20, are disposed upon base l1, and each comprises a pair of upstanding legs joined at their upper ends by an obliquely disposed loop designated 22 in the case of element [9 and 23 in the case of element 20. The lower ends of each of the pairs of legs of the elements l9 and 20 are merely pressed into suitable openings provided in base l1. Thread from the eyelet l6 passes through loop 23, thence through a free metal or other ring 25 which extends about all four legs of the elements l9 and 20, thence upwardly through the other loop 22 of element I9.

It will be seen that the thread from loop 23 to the ring and the thread from the ring to loop 22 makes a relatively acute angle which is not reatly varied through the normal range of operation of ring 25. However, increasing tension of the thread at the cone causes ring 25 to rise higher to a point where the thread runs in a much less arcuate angle and the floating tension imparted by the ring 25 is thus materially reduced.

A second form of tension device which may be used in substitution of the device shown in Figs. 3 and 4 is illustrated in Figs. and 6. In this case the tension devices are likewise secured to eyelet bars l5 and include fibre bases 28. The steel wire or like material which makes up the main body portion of the tension device of Figs. 5 and 6 comprises a pair of depending legs 29 and 30 joined at their upper ends by an enlarged loop portion 3|. The upper portions of legs 29 and 30 extend obliquely, as shown in Fig. 6, and adjacent the base of loop 3| there is a ring 33 which is soldered, welded, or otherwise fixed at its opposite sides to the upper ends of the legs 29 and 30.

In this form of tension device the yarn or thread from eyelet [6 passes over the lower half of ring 33, as shows clearly in Fig. 6, thence through a freely suspended weight ring 34, thence over the opposite side of ring 33. Here again the lengths of yarn or thread to and from the suspended weight ring 34 makes a relatively acute angle which is not materially varied until ring 34 approaches its upper limit of movement.

Figs. 7 and 8 illustrate a combination tension and stop motion device which is illustrated in Figs. 1 and 2 as bein used in conjunction with the tension device of Figs. 3 and 4. Of course, the tension devices of Figs. 5 and 6 may be substituted for the tension devices of Figs. 3 and 4 in this combination and any of the three forms of tension device may be used independently of the others, within the limits of the present invention.

Referring to Fig. 7, yarn from the creel proper comes from the left as viewed in Fig. 7 (from the right as viewed in Fig. 1) and passes over a guide rail 40 which is supported by and extends parallel to a rail 4| which is one of a vertical series of rails projecting forwardly from the lefthand side of creel I0. Also extendin forwardly from creel I0 is a second series of rails or bars 42 which support the tension and stop motion devices of this portion of the present disclosure.

The tension devices proper comprise spaced legs 45 and 46 merging at their upper ends in an enlarged loop portion 41. The lower ends of the legs may be pressed into suitable openings formed in bar 42. The yarn from guide rail passes through a weight ring 48 which extends about legs and 46 and the yarn then passes through an eyelet 50 in rail 4|, thence to the beamer.

Besides tensioning the yarn by its dependence therefrom, weight ring 48 serves as a stop motion. A pair of bars 52 and 53 rest in grooves in the upper surface of bar 42; the latter is formed of Bakelite or other insulating material and the bars 52 and 53 are electrical conductors and serve as opposed electrodes of a machine-stopping circuit. When the yarn breaks or too much slack develops, the ring 48 supported thereby falls to the rails 52 and 53, bridges them and establishes a machine-stopping circuit. The details of the electrical circuit form no part of the present invention and any conventional machinestopping circuit may be employed.

What is claimed is:

In a yarn or strand tensioning device, upright supporting means, means rigid with said support means and comprising a ring disposed adjacent the upper end thereof, and a weight ring disposed about said support means for free vertical movement therealong below said rigid ring, whereby a thread passing over one side of said rigid ring, through the weight ring and over the other side of said rigid ring is tensioned by the weight of the ring suspended thereby.

ARCHIBALD T. GUILD.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 143,268 Webber Sept. 30, 1873 424,295 Haslam Mar. 25, 1890 712,443 Soveluis Oct. 28, 1902 1,079,896 Yorger Nov. 25, 1913 1,169,185 Pasbrha Jan. 25, 1916 1,678,975 Cooker July 31, 1928 2,017,008 Loncteaux et a1. Oct. 8, 1935 2,531,944 Metcalf Nov. 28, 1950 FOREIGN PATENTS Number Country Date 286,271 Great Britain Feb. 28, 1928 

